and my touchscreen device always appeared at /dev/input/gtouch. Under LMCE same thing doesn't work. As I see (I don't know Linux so well), rules are now defined in 3 parts : first in 20-names.rules, then in 40-permissions.rules and at last on the spot I was adding my rule before : 60-symlinks.rules .

I haven't used a device like this before, so I could be mistaken, but it looks like the new kernel version renamed the device node. It seems before it was called event*, whereas now it's called input*. Also, it's input4 which is outside of your range of [0-3].